Contrast control for sonar pictures

Francoise Schmitt; Laurent Bonnaud; Christophe Collet

doi:10.1117/12.258269

14 November 1996 Contrast control for sonar pictures

Francoise Schmitt, Laurent Bonnaud, Christophe Collet

Proceedings Volume 2847, Applications of Digital Image Processing XIX; (1996) https://doi.org/10.1117/12.258269
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

During the sonar image acquisition, several physical phenomena degrade the final picture a lot. We examine particularly two damages: the energy loss function of the distance covered by the acoustical wave and the speckle noise. For the first phenomenon, we suggest a corrective post processing which takes some acquisition parameters into account. For the second phenomenon, we apply filtering algorithms like the maximum a posteriori filter, a modified version of the Lee algorithm or an adaptive weighted median filter. The results are shown on real sonar images.

Citation Download Citation

Francoise Schmitt, Laurent Bonnaud, and Christophe Collet "Contrast control for sonar pictures", Proc. SPIE 2847, Applications of Digital Image Processing XIX, (14 November 1996); https://doi.org/10.1117/12.258269

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